Curious Cox 350 Babe Bee

ticomareado wrote:Nicest looking used back plate I've seen in quite a while.

Yes, surprising considering how castor locked the reed was.  I was expecting a mess when I separated the plate from the tank.

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I couldn't find anything else in the book that even came close Ron.

It's a standard #3 cylinder polished for a throttle ring with a high compression head.  Perhaps it was grafted on a straight nose non grooved case that at one time housed a starter spring.

I rebuilt it the same only replacing gaskets, eliminating one of the reeds, and adding a spinner.  

The most curious part is the elimination of the two top cylinder fins.  That's a lot of effort just to clean up some damaged fins and the result is more bad than good cooling wise.  



Bob

Perhaps a home job to use on an RC boat with throttle and heat sink head?

The Stumped Mark

Good guess but I'd go with a heat sink head R/C car before an R/C boat on this one. A stock Baby Bee tank holds just enough fuel to get an R/C boat out in the middle of the lake and stop.

It came with a propeller attached (top picture).

Each of these little engines has a story to tell.  

These for examples: One flight only, or lot's of fun.



Or this one. Looks like it was stored in battery acid, yet the mounting screws and reed look new.

ticomareado wrote:Good guess but I'd go with a heat sink head R/C car before an R/C boat on this one. A stock Baby Bee tank holds just enough fuel to get an R/C boat out in the middle of the lake and stop.

I trusted electric with mine.

Bob,
Regarding the two mylar reeds in place on the Baby Bee, a few years ago, one of the many things I acquired from the Cox R&D batch that showed up, was a Red Cox Shrike car with the Baby Bee pusher setup.
It was totally frozen solid which helped get a really good price from the guy.
Once I got it home and took it apart, it was apparent that the Shrike was a customer store return that made it all the way back to Cox.
The tank had been filled by the original purchaser and was left totally full of fuel for many years to end up as hard gel.
When I got it all apart finally, I found that there were actually two mylar reeds put in by the factory assembly person.
It would never start no matter what that caused it to end up back at the factory.
I totally cleaned it and replaced all seals, gaskets, and one reed and it is mint and never started, yet...
FWIW...Steve.....

I don't know about battery acid but i Know if you leave one in hobbys #9 for a month it will do that to it

getback wrote:I don't know about battery acid but i Know if you leave one in hobbys #9 for a month it will do that to it

The voice of experience. Same will happen with Simple Green. Looks like someone did just that, then replaced the gaskets and reed.

BOb

Forensic guess on photo of 4 engines:

Clockwise starting at upper left-- 1) Stuka, splat in a million pieces on parking lot first attempt to fly 2) PT- 19 with plenty of flight time

3) Lil' Stinker-- busted landing gear first flight 4) PT-19 low time, probably busted a little something or another in a normal training crash on grass

ticomareado wrote:Forensic guess on photo of 4 engines:

Clockwise starting at upper left-- 1)  Stuka, splat in a million pieces on parking lot first attempt to fly   2)  PT- 19 with plenty of flight time

3) Lil' Stinker-- busted landing gear first flight   4)  PT-19 low time, probably busted a little something or another in a normal training crash on grass

Excellent guess.

I just cleaned the 3 .049's (A/F boil) and the upper right PT-19 shows a lot of castor goo while the .020 and bottom PT-19 are quite clean. But I can't agree on #1, a parking lot splat would have lunched that spinner.